Hi Bruce, x86-base and qemuarm are still 4.18 by default, not 4.19. Any concern? meta/conf/machine/include/x86-base.inc:21:PREFERRED_VERSION_linux-yocto ??= "4.18%" meta/conf/machine/qemuarm.conf:20:PREFERRED_VERSION_linux-yocto ??= "4.18%" Thanks, Zhe